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Ch 14 Science 8

TermDefinition
Mineral a naturally occuring, inorganic, crystalline solid with a definite chemical composition
Ore rock containing one or more minerals that are the source of elements or compounds important to industry or agriculture
Element a substance composed of only one kind of atom
Native Mineral a mineral that contains only one kind of atom and is therefore a pure element
Compound a substance formed from two or more elements combined
Mixture two or more substances mixed together but not chemically combined
streak The color of the powdered mineral that remains after rubbing the specimen across porcelain
Streak plate A piece of unglazed porcelain on which a mineral is rubbed in performing a streak test
luster Refers to the quality and intensity of light reflected from the mineral’s surface
accretion The growth or enlargement of a crystal
cleavage Allows a mineral to break easily into thin sheets
fracture The characteristic manner in which a mineral breaks when it does not exhibit cleavage.
Hardness test A comparison of the ability of one substance to scratch or be scratched by another
Mohs scale From 1 to 10, classifies minerals according to their relative hardness
Specific gravity A ratio of the mass of a mineral to that of an equal volume of water
lodestone magnetite is known as this
flame test identifies the color of the flame produced when the mineral burns
refraction bending of light
polarization a light wave is filtered so that it vibrates in only one direction
magnetism measures the ability of the mineral to pick up pieces of iron
fluorescent Minerals that emit light while absorbing radiation from another source
phosphorescent Minerals that emit light after absorbing radiation from another source
double refraction it produces a double image as light passes through it.
luminescence to glow
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